The 48L1433 supports a better video mode than most mid-size TVs that came out more than two years ago. This television supports a 480i video mode, whereas most similar spec TVs that came out around the same time as it support a 1080p video mode. This TV also support 1080i, 2160p, 480p, 576i, 576p and 720i and 720p video modes.
This TV's video mode (480i) is in fact the worst supported video mode amongst all mid-size TVs that are a similar age to the 48L1433.
Amongst comparable types of TV the best supported video mode is 2160p.